Solution

.dockerignore

@@ -0,0 +1,4 @@
+.venv
+Dockerfile
+.idea
+docker-compose.yml

.gitignore

@@ -3,7 +3,7 @@
 *.iml
 .env
 .DS_Store
-venv/
+.venv/
 .pytest_cache/
 **__pycache__/
 **db.sqlite3

Dockerfile

@@ -0,0 +1,22 @@
+FROM python:3.12-alpine
+LABEL maintainer="dmitriykuzmin@ymail.com"
+
+ENV PYTHONUNBUFFERED=1
+
+WORKDIR /app
+
+COPY requirements.txt requirements.txt
+RUN pip install --no-cache-dir -r requirements.txt
+
+COPY . .
+RUN mkdir -p /files/media
+
+RUN adduser \
+    --disabled-password \
+    --no-create-home \
+    my_user
+
+RUN chown -R my_user /files/media
+RUN chmod -R 755 /files/media/
+
+USER my_user

cinema/migrations/0002_alter_movie_actors_alter_movie_genres_and_more.py

@@ -0,0 +1,41 @@
+# Generated by Django 5.2.12 on 2026-03-31 10:55
+
+import django.db.models.deletion
+from django.conf import settings
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('cinema', '0001_initial'),
+        migrations.swappable_dependency(settings.AUTH_USER_MODEL),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='movie',
+            name='actors',
+            field=models.ManyToManyField(blank=True, related_name='movies', to='cinema.actor'),
+        ),
+        migrations.AlterField(
+            model_name='movie',
+            name='genres',
+            field=models.ManyToManyField(blank=True, related_name='movies', to='cinema.genre'),
+        ),
+        migrations.AlterField(
+            model_name='moviesession',
+            name='cinema_hall',
+            field=models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, related_name='movie_sessions', to='cinema.cinemahall'),
+        ),
+        migrations.AlterField(
+            model_name='moviesession',
+            name='movie',
+            field=models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, related_name='movie_sessions', to='cinema.movie'),
+        ),
+        migrations.AlterField(
+            model_name='order',
+            name='user',
+            field=models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, related_name='orders', to=settings.AUTH_USER_MODEL),
+        ),
+    ]

cinema_service/settings.py

@@ -9,6 +9,7 @@
 For the full list of settings and their values, see
 https://docs.djangoproject.com/en/4.0/ref/settings/
 """
+import os
 from datetime import timedelta
 from pathlib import Path
 
@@ -27,7 +28,7 @@
 # SECURITY WARNING: don't run with debug turned on in production!
 DEBUG = True
 
-ALLOWED_HOSTS = []
+ALLOWED_HOSTS = ["0.0.0.0", "127.0.0.1", "localhost"]
 
 INTERNAL_IPS = [
     "127.0.0.1",
@@ -47,6 +48,7 @@
     "debug_toolbar",
     "cinema",
     "user",
+    "core",
 ]
 
 MIDDLEWARE = [
@@ -86,12 +88,15 @@
 
 DATABASES = {
     "default": {
-        "ENGINE": "django.db.backends.sqlite3",
-        "NAME": BASE_DIR / "db.sqlite3",
+        "ENGINE": "django.db.backends.postgresql",
+        "NAME": os.environ.get("POSTGRES_DB"),
+        "USER": os.environ.get("POSTGRES_USER"),
+        "PASSWORD": os.environ.get("POSTGRES_PASSWORD"),
+        "HOST": os.environ.get("POSTGRES_HOST"),
+        "PORT": os.environ.get("POSTGRES_PORT"),
     }
 }
 
-
 # Password validation
 # https://docs.djangoproject.com/en/4.0/ref/settings/#auth-password-validators
 
@@ -134,7 +139,7 @@
 STATIC_URL = "static/"
 
 MEDIA_URL = "/media/"
-MEDIA_ROOT = BASE_DIR / "media"
+MEDIA_ROOT = "/files/media"
 
 # Default primary key field type
 # https://docs.djangoproject.com/en/4.0/ref/settings/#default-auto-field

core/admin.py

@@ -0,0 +1,3 @@
+from django.contrib import admin
+
+# Register your models here.

core/apps.py

@@ -0,0 +1,6 @@
+from django.apps import AppConfig
+
+
+class CoreConfig(AppConfig):
+    default_auto_field = "django.db.models.BigAutoField"
+    name = "core"

core/management/commands/wait_for_db.py

@@ -0,0 +1,21 @@
+import time
+
+from django.db import connections
+from django.db.utils import OperationalError
+from django.core.management.base import BaseCommand
+
+
+class Command(BaseCommand):
+    """Django command to pause execution until database is available"""
+
+    def handle(self, *args, **kwargs):
+        self.stdout.write("Waiting for database...")
+        while True:
+            try:
+                db = connections["default"]
+                db.ensure_connection()
+                break
+            except OperationalError:
+                self.stdout.write("Database unavailable, waiting 1 second...")
+                time.sleep(1)
+        self.stdout.write(self.style.SUCCESS("Database available"))

core/models.py

@@ -0,0 +1,3 @@
+from django.db import models
+
+# Create your models here.

core/tests.py

@@ -0,0 +1,3 @@
+from django.test import TestCase
+
+# Create your tests here.

core/views.py

@@ -0,0 +1,3 @@
+from django.shortcuts import render
+
+# Create your views here.

docker-compose.yml

@@ -0,0 +1,31 @@
+services:
+  app:
+    build:
+      context: .
+    ports:
+      - "8000:8000"
+    volumes:
+      - ./:/app/
+      - my_media:/files/media
+    command: >
+      sh -c "python manage.py wait_for_db &&
+            python manage.py migrate &&
+            python manage.py runserver 0.0.0.0:8000"
+    env_file:
+      - .env
+    depends_on:
+      - db
+
+  db:
+    image: postgres:14-alpine
+    ports:
+      - "5432:5432"
+    env_file:
+      - .env
+    restart: always
+    volumes:
+      - my_db:$PGDATA
+
+volumes:
+  my_db:
+  my_media:

requirements.txt

@@ -8,3 +8,5 @@ djangorestframework
 djangorestframework-simplejwt
 drf-spectacular
 Pillow
+psycopg==3.1.12
+psycopg-binary==3.1.12